Re: Did we really need to clear the IF flag at prepare_singlestep()of x86 kprobes?

[Arjan van de Ven]

On Tue, 12 Jan 2010 19:09:35 +0800
Dongdong Deng <libfetion@xxxxxxxxx> wrote:

> Hi Kprobe experts,
> 
> I have a doubt about the handling "X86_EFLAGS_IF" at
> prepare_singlestep(), Could you give me some suggestions?


iirc it was a security thing; we used to have some exploits
due to the linux-abi entry points which caused a mess, and this
was put there as defensive programming.

I could totally misremember this as well of course.


-- 
Arjan van de Ven 	Intel Open Source Technology Centre
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